Phone service companies for multiple numbers

[William Allen]

What is everyone using for multiple phone numbers ringing to the same phone to track your marketing.  I want to have multiple users able to answer the same phone call, some customer service, be able to send voicemail audio files to podio (will probably require another system and I will work on that.  I am looking at vumber and ring central right now but there are a ton out there.  Who is successful with what systems?  I searched for a while but may have been putting in the wrong keywords.  Thanks!

[David Dachtera]

Have you looked at Google Voice? It may not do everything you want, but it is free. The only hang-up (pun intended) is that a separate e-mail address is needed for each number.